Why is the 7-day forecast different from the 16-day forecast?

While both models are derived from NOAA's Wavewatch III wave forecasting model, there are some regional differences in forecast resolution between Buoyweather’s LOLA model and the forecasts produced by the NCEP. Both models provide accurate forecasts around the world, but keep in mind that long term forecasts can change over time, thus we recommend that users check forecasts daily for updated information whenever possible.